Gradual expansion tube automatic welding adapter

Abstract

The application discloses a gradually expanding pipe automatic welding butt joint device and belongs to the technical field of pipe welding. The gradually expanding pipe automatic welding butt joint device comprises metal hoops, the metal hoops are two, the metal hoop comprises a first cavity half hoop and a second cavity half hoop, the inner side of the first cavity half hoop and the second cavity half hoop is provided with an integrally formed electric control horizontal rib sleeve, the lower side of the electric control horizontal rib sleeve is provided with a butt joint adjusting assembly, and the electric control horizontal rib sleeve on the inner side of one metal hoop is internally provided with a lock sleeve pin. In order to solve the problem that the welding of gradually expanding pipes often depends on manual welding due to the lack of a gradually expanding pipe automatic welding butt joint device, the electric control horizontal rib sleeve inside the adjacent electric control supporting rail and the lock sleeve pin structure in the region are contracted, and the other two groups of electric control horizontal rib sleeves remain locked, so that the pipe is fixed, and the horizontal rib connecting structure is prevented from hindering the welding process.

Description

Technical Field

[0001] This invention relates to the field of pipeline welding technology, specifically to an automatic welding and mating device for diffuser pipes. Background Technology

[0002] Currently, in pipeline welding projects, to prevent misalignment between two pipe sections, a pipe alignment tool is generally used. Compared to internal alignment tools, external alignment tools are widely used in welding two pipe sections of the same diameter due to their superior operability, ease of adjustment, simple construction, and cost-effectiveness. For example, China has invented an external pipe alignment tool, patent number 201710047972.X.

[0003] However, the aforementioned patents and current external matching devices still have some drawbacks in use, such as:

[0004] (1) It is impossible to align the expansion tubes. That is, when the diameters of the two tubes after welding are inconsistent, it is difficult to use ordinary external alignment tools for precise alignment.

[0005] (2) Because the expanding end of the expanding pipe has a certain slope, the nut of the aligning device cannot be adjusted to better fit the outer wall of the pipe.

[0006] (3) The frame on which the nut part of the aligner is attached will hinder the welding. The conventional method is to remove the aligner after the alignment is completed. During welding, the lack of support from the aligner often causes stress or vibration during welding, resulting in inaccurate alignment.

[0007] The lack of a mechanical feedback sensor on the matching nuts causes inconsistent fit between the nuts and pipes at different positions during matching, affecting the matching effect.

[0008] Based on the above problems, the lack of an automatic welding and mating device for expanding pipe fittings has led to the reliance on manual welding for the welding of expanding pipe fittings, resulting in a decline in welding quality and efficiency. Therefore, this does not meet the current needs, and an automatic welding and mating device for expanding pipe fittings has been proposed. Summary of the Invention

[0009] The purpose of this invention is to provide an automatic welding and mating device for expanding pipes. The electrically controlled rails and locking pins inside the adjacent electrically controlled transverse rib sleeves in the area are contracted, while the other two sets of electrically controlled transverse rib sleeves remain locked. This achieves pipe fixation while avoiding the transverse rib connection structure from hindering the welding process, thus solving the problems in the prior art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: an automatic welding and mating device for expanding tubes, comprising two metal rings, each including a first hollow half-ring and a second hollow half-ring. Both the first and second hollow half-rings have an integrally formed electrically controlled transverse rib sleeve on their inner sides. A mating adjustment component is located below the electrically controlled transverse rib sleeve. A locking pin is located inside one of the electrically controlled transverse rib sleeves, and a biting pin is located inside the other electrically controlled transverse rib sleeve. An electrically controlled support rail is located inside the electrically controlled transverse rib sleeve. The electrically controlled support rail is slidably connected to both the locking pin and the biting pin via a track groove. An infrared sensing collar is located at one end of the locking pin, which is electrically connected to the electrically controlled support rail. A locking groove is located inside the infrared sensing collar, and one end of the biting pin is connected to the locking pin via the locking groove.

[0011] Preferably, photovoltaic panels are provided on one side of both the first and second cavity semi-rings, and tempered glass is provided on the outer surface of the photovoltaic panels. Lithium batteries are provided inside both the first and second cavity semi-rings, and the lithium batteries are electrically connected to the photovoltaic panels and the electric control rail, respectively.

[0012] Preferably, both ends of the first hollow semi-ring are provided with single-ear hinge plates, and both ends of the second hollow semi-ring are provided with double-ear hinge plates. The single-ear hinge plate is located between the double-ear hinge plates, and the outer surfaces of both the single-ear hinge plate and the double-ear hinge plate are provided with ear-penetrating grooves.

[0013] Preferably, the single-ear hinge plate and the double-ear hinge plate are locked together by locking bolts, which extend through the ear hole grooves to both sides of the double-ear hinge plate.

[0014] Preferably, the adjusting assembly includes a storage seat, a pressing end, and an adjusting screw, with the storage seat and the metal ring forming an integral structure.

[0015] Preferably, one end of the adjusting screw is rotatably connected to the receiving seat through a threaded groove, and the pressing end is installed at the other end of the adjusting screw.

[0016] Preferably, a spherical shaft is provided between the pressing end and the adjusting screw, and the spherical shaft and the pressing end are configured as an integral structure. The spherical shaft is rotatably connected to the adjusting screw through a joint limiting groove.

[0017] Preferably, a pressure-sensing pad is provided on the outer surface of the pressing end, a gap is provided between the pressure-sensing pad and the pressing end, and a sensing spring is provided on the inner side of the pressure-sensing pad.

[0018] Preferably, the sensing spring is installed inside the pressing end via a sensing bracket, and the pressure sensing pad is telescopically connected to the sensing bracket via the sensing spring.

[0019] Preferably, metal torsion plates are welded to both sides of one end of the adjusting screw, and the metal torsion plates are located above the pressing end.

[0020] Specifically, this invention relates to an emergency braking device and a data display device for providing an automatic welding and mating device for involute tubes. The data display device specifically includes a welding temperature data detection device, a welding speed detection device, and a total welding time and welding distance detection device.

[0021] The emergency braking device includes a ring-shaped detection sensor fixed in the first and second cavity semi-rings. This sensor detects whether there are any obstructions around the welding torch. If an obstruction is detected, a trigger signal is emitted to stop the welding torch's movement. The ring-shaped sensor can also detect data such as the welding torch temperature, welding torch speed, total welding distance, and welding time. This data is displayed on a separate display for the user to read and, when necessary, to monitor the welding torch's movement and initiate an emergency stop.

[0022] The welding torch is mechanically connected to two metal rings and moves around the metal rings. The welding torch can also move laterally between the two metal rings to achieve automatic welding.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In this invention, after the locking pin and the engaging pin are connected, the area between the metal rings is divided into four identical working spaces. During welding, any set of working spaces can be selected as the starting area. During the welding process, the welding torch generates heat. At this time, the infrared sensing rings on the two electrically controlled transverse rib sleeves in the working area where the welding torch is located can sense the heat generated by the welding torch. The data signal sensed by the infrared sensing rings will be further transmitted to the electrically controlled support rail, thereby controlling the locking pin and engaging pin structure inside the adjacent electrically controlled transverse rib sleeves in this area to retract. In this way, the welding torch can directly perform welding operations along the weld seam, while the other two sets of electrically controlled transverse rib sleeves remain locked to prevent the splicing between the pipes from breaking. When the welding torch moves to the next working area, the electrically controlled transverse rib sleeve in the current area retracts, while the electrically controlled transverse rib sleeve in the area where the welding is completed re-expands and fixes itself. The whole process achieves pipe fixation while avoiding the transverse rib connection structure from hindering the welding process.

[0025] 2. In this invention, the spherical shaft of the pressing end and the adjusting screw can be used to adjust the angle between the pressing end and the adjusting screw. By adjusting the angle, the slope welding operation of two sets of pipes with different diameters can be realized.

[0026] 3. In this invention, the metal hoop is composed of a first hollow half-ring and a second hollow half-ring. The hollow half-rings are connected and fixed by a hinge plate structure. When disassembling, simply remove the locking bolts used to fix the hinge plates, and then separate the first hollow half-ring and the second hollow half-ring. When reassembling, insert the single-ear hinge plates at both ends of the first hollow half-ring into the double-ear hinge plates at both ends of the second hollow half-ring, and then tighten and fix them by tightening the locking bolts. This makes it convenient to fit the metal hoop on the outside of the pipe, and the diameter of the metal hoop can be adjusted by the ear hole groove on the surface between the single-ear hinge plate and the double-ear hinge plate. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the metal ring structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the unfolded structure of the metal ring hoop of the present invention;

[0029] Figure 3 This is a schematic diagram of the cavity semi-ring structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the alignment adjustment component structure of the present invention;

[0031] Figure 5 This is an exploded view of the alignment adjustment component of the present invention;

[0032] Figure 6 This is a schematic diagram of the cross-sectional structure of the adjusting screw of the present invention.

[0033] Figure 7 This is a simplified schematic diagram within a limited time period of the present invention.

[0034] In the diagram: 1. Metal ring; 2. Electrically controlled horizontal rib sleeve; 3. Alignment adjustment assembly; 101. First cavity semi-ring; 102. Second cavity semi-ring; 103. Photovoltaic panel assembly; 104. Locking bolt; 1011. Single-ear hinge plate; 1021. Double-ear hinge plate; 1041. Through-ear slot; 201. Locking pin; 202. Engaging pin; 203. Electrically controlled support rail; 204. Infrared sensing collar; 2011. Locking groove; 2031. Track engagement groove; 301. Storage seat; 302. Pressing end; 303. Adjusting screw; 304. Pressure sensing pad; 305. Metal torsion plate; 3011. Threaded sleeve groove; 3021. Sensing support groove; 3031. Joint limiting groove; 3032. Spherical shaft; 3041. Sensing spring. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-2 An embodiment of the present invention provides an automatic welding and mating device for diffuser tubes, comprising two metal ring clamps 1. Each metal ring clamp 1 includes a first hollow semi-ring 101 and a second hollow semi-ring 102. An integrally formed electrically controlled transverse rib sleeve 2 is provided on the inner side of both the first hollow semi-ring 101 and the second hollow semi-ring 102. A mating adjustment component 3 is provided below the electrically controlled transverse rib sleeve 2. A locking pin 201 is provided inside the electrically controlled transverse rib sleeve 2 on the inner side of one metal ring clamp 1. The electrically controlled transverse rib sleeve 2 on the inner side of the other metal ring clamp 1... The inner part of the rib sleeve 2 is provided with a biting pin 202, and the inner part of the electrically controlled horizontal rib sleeve 2 is provided with an electrically controlled support rail 203. The electrically controlled support rail 203 is slidably connected to the locking pin 201 and the biting pin 202 through the track groove 2031. One end of the locking pin 201 is provided with an infrared sensing collar 204. The infrared sensing collar 204 is electrically connected to the electrically controlled support rail 203. The inner side of the infrared sensing collar 204 is provided with a locking groove 2011. One end of the biting pin 202 is connected to the locking pin 201 through the locking groove 2011.

[0037] During welding, a pre-welding run is required between the welding torch and the device. After the device is aligned, the welding torch should run at least once inside the device to check if the run is successful before proceeding with welding.

[0038] The two metal ring clamps 1 can be connected by an electrically controlled horizontal rib sleeve 2. In use, one metal ring clamp 1 is installed in the weld area of ​​one set of pipes, and the other metal ring clamp 1 is installed in the weld area of ​​another set of pipes. Then, the inner alignment adjustment component 3 is rotated so that the gasket structure at its end fits against the surface of the pipe, so that the alignment nut presses against the completed weld. Then, the ports of the two sets of pipe structures that need to be welded are spliced ​​together. After the splicing is completed, the metal ring clamps 1 on the outside of the two pipes are connected and fixed by the locking pin 201 and the biting pin 202, thereby realizing the pre-connection operation of the two sets of pipes. After the fixation is completed, observe whether the tightening force is uniform. Finally, the pipe weld is welded in the interval area between the metal ring clamps 1.

[0039] An infrared sensing collar 204 is installed at the end of the locking pin 201 used to connect the two metal rings 1. The locking groove 2011 structure inside the infrared sensing collar 204 enables the connection between the locking pin 201 and the engaging pin 202. After the locking pin 201 and the engaging pin 202 are connected, the space between the metal rings 1 is divided into four identical working spaces. During welding, any set of working spaces can be selected as the starting area. During welding, the welding torch generates heat. At this time, the infrared sensing collars 204 on the two electrically controlled transverse rib sleeves 2 within the working area where the welding torch is located can sense the heat generated by the welding torch. The data signal sensed by the external sensing collar 204 will be further transmitted to the electric control rail 203, thereby controlling the locking pin 201 and the biting pin 202 structure inside the adjacent electric control horizontal rib sleeve 2 in this area to retract. In this way, the welding torch can directly perform welding operations along the weld seam, while the other two sets of electric control horizontal rib sleeves 2 remain locked to prevent the splice between the pipes from breaking. When the welding torch moves to the next working area, the electric control horizontal rib sleeve 2 in the current area retracts, while the electric control horizontal rib sleeve 2 in the area where the welding is completed re-expands and fixes itself. The whole process achieves pipe fixation while avoiding the horizontal rib connection structure from hindering the welding process.

[0040] In practical use, it can be used in conjunction with welding mechanisms to achieve automatic control and data display feedback.

[0041] Please see Figure 2-3 A photovoltaic panel assembly 103 is provided on one side of the first cavity semi-ring 101 and the second cavity semi-ring 102. The outer surface of the photovoltaic panel assembly 103 is provided with tempered glass. A lithium battery is provided inside the first cavity semi-ring 101 and the second cavity semi-ring 102. The lithium battery is electrically connected to the photovoltaic panel assembly 103 and the electric control rail 203 respectively. A single-ear hinge plate 1011 is provided at both ends of the first cavity semi-ring 101, and a double-ear hinge plate 1021 is provided at both ends of the second cavity semi-ring 102. The single-ear hinge plate 1011 is located between the double-ear hinge plates 1021. The outer surface of the single-ear hinge plate 1011 and the double-ear hinge plate 1021 is provided with a through-hole groove 1041. The single-ear hinge plate 1011 and the double-ear hinge plate 1021 are locked together by a locking bolt 104. The locking bolt 104 extends through the through-hole groove 1041 to both sides of the double-ear hinge plate 1021.

[0042] The metal ring clamp 1 is composed of a first hollow half-ring 101 and a second hollow half-ring 102. The hollow half-rings are connected and fixed by a hinge plate structure. When disassembling, simply remove the locking bolts 104 used to fix the hinge plates, and then separate the first hollow half-ring 101 and the second hollow half-ring 102. When reassembling, insert the single-ear hinge plates 1011 at both ends of the first hollow half-ring 101 into the double-ear hinge plates 1021 at both ends of the second hollow half-ring 102, and then tighten and fix it with the locking bolts 104. This makes it convenient to put the metal ring clamp 1 on the outside of the pipe, and the diameter of the metal ring clamp 1 can be adjusted by the ear hole groove 1041 on the surface between the single-ear hinge plate 1011 and the double-ear hinge plate 1021.

[0043] The first cavity semi-ring 101 and the second cavity semi-ring 102 are equipped with independent power battery structures. The battery structure provides energy storage through the photovoltaic panel assembly 103 on the outside of the ring hoop. The lithium battery is responsible for providing electrical energy to the electronically controlled rail 203 and the induction structure. The electronically controlled rail 203 realizes the telescopic sliding operation of the locking pin 201 and the engaging pin 202.

[0044] Please see Figure 4-6 The adjusting assembly 3 includes a storage base 301, a pressing end 302, and an adjusting screw 303. The storage base 301 and the metal ring 1 are integrated into one piece. One end of the adjusting screw 303 is rotatably connected to the storage base 301 via a threaded groove 3011. The pressing end 302 is installed at the other end of the adjusting screw 303. A spherical shaft 3032 is provided between the pressing end 302 and the adjusting screw 303. The spherical shaft 3032 and the pressing end 302 are integrated into one piece. The spherical shaft 3032 is connected to the adjusting screw 303 via a joint limiting groove 3031. 03 Rotary connection, a pressure sensing pad 304 is provided on the outer surface of the pressing end 302, a gap is provided between the pressure sensing pad 304 and the pressing end 302, a sensing spring 3041 is provided on the inner side of the pressure sensing pad 304, the sensing spring 3041 is installed inside the pressing end 302 through the sensing bracket 3021, the pressure sensing pad 304 is telescopically connected to the sensing bracket 3021 through the sensing spring 3041, and metal torsion plates 305 are welded to both sides of one end of the adjusting screw 303, the metal torsion plates 305 are located above the pressing end 302;

[0045] The alignment adjustment component 3 is located inside the electrically controlled horizontal rib sleeve 2. Rotating the metal torsion plates 305 on both sides of one end of the adjustment screw 303 can adjust the extension length between the screw 303 and the storage seat 301. This allows the pressure sensing pad 304 on the surface of the pressing end 302 to be placed against the surface of the pipe. The mechanical sensor structure inside the washer can feed back the mechanical force after alignment to the monitoring end. The specified fastening force deviation is within 20%, which proves that the alignment force is uniform and the alignment effect is acceptable.

[0046] The spherical shaft 3032 of the pressing end 302 and the adjusting screw 303 can be used to adjust the angle between the pressing end 302 and the adjusting screw 303. By adjusting the angle, the slope welding operation of two sets of pipes with different diameters can be realized.

[0047] The automatic welding and buttressing device for involute tubes includes an emergency braking device and a data display device. The data display device specifically includes a welding temperature data detection device, a welding speed detection device, and a total welding time and welding distance detection device.

[0048] The emergency braking device includes a ring-shaped detection sensor fixed in the first and second hollow semi-rings. It detects whether there are obstructions around the welding torch. If an obstruction is detected, a trigger signal is emitted to stop the welding torch's movement. The ring-shaped sensor can also detect data such as welding torch temperature, welding torch speed, total welding distance, and welding time. Figure 7 As shown, the above data is displayed on a separate display so that the user can read the data and, if necessary, access the welding torch's movement status and emergency stop.

[0049] The welding torch is mechanically connected to two metal rings and moves around the metal rings. The welding torch can also move laterally between the two metal rings to achieve automatic welding.

[0050] The operation method of the automatic welding and butt joint device for involute tubes includes the following steps:

[0051] Step 1: Install one metal ring clamp 1 in one set of pipe weld joint areas and another metal ring clamp 1 in another set of pipe weld joint areas. Then rotate the inner alignment adjustment component 3 so that the gasket structure at its end fits against the surface of the pipe, so that the alignment nut presses against the completed weld. Then splice the ports of the two sets of pipe structures that need to be welded together.

[0052] Step 2: After the splicing is completed, the metal rings 1 on the outside of the two pipes are fixed by the cooperation of the locking pin 201 and the interlocking pin 202, thereby realizing the pre-connection operation of the two sets of pipes. After the fixing is completed, observe whether the tightening force is uniform.

[0053] Step 3: Finally, the pipe weld is welded in the interval area between the metal rings 1. The locking pin 201 used to connect the two metal rings 1 is equipped with an infrared sensing collar 204 at the end. The connection between the locking pin 201 and the engagement pin 202 can be realized through the locking groove 2011 structure inside the infrared sensing collar 204.

[0054] Step 4: After the locking pin 201 and the engaging pin 202 are connected, the area between the metal rings 1 will be divided into four identical working spaces. During welding, any set of working spaces can be selected as the starting area.

[0055] Step 5: During the welding process, the welding torch will generate heat. At this time, the infrared sensing rings 204 on the two electrically controlled horizontal rib sleeves 2 in the working area of ​​the welding torch can sense the heat generated by the welding torch. The data signal sensed by the infrared sensing rings 204 will be further transmitted to the electrically controlled support rail 203, thereby controlling the locking pin 201 and the biting pin 202 structure inside the adjacent electrically controlled horizontal rib sleeves 2 in this area to retract. In this way, the welding torch can directly perform welding operations along the weld seam, while the other two sets of electrically controlled horizontal rib sleeves 2 remain locked to prevent the splice between the pipes from breaking.

[0056] Step Six: When the welding torch moves to the next working area, the electrically controlled horizontal rib sleeve 2 in the current area retracts, while the electrically controlled horizontal rib sleeve 2 in the area where welding is completed re-expands and is fixed. The whole process achieves pipe fixation while avoiding the horizontal rib connection structure from hindering the welding process.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic welding and mating device for involute pipes, comprising a metal ring clamp (1), characterized in that: There are two metal ring clamps (1). Each metal ring clamp (1) includes a first hollow half-ring (101) and a second hollow half-ring (102). The inner sides of both the first hollow half-ring (101) and the second hollow half-ring (102) are provided with integrally formed electrically controlled transverse rib sleeves (2). An alignment adjustment assembly (3) is provided below the electrically controlled transverse rib sleeves (2). A locking pin (201) is provided inside the electrically controlled transverse rib sleeve (2) inside one of the metal ring clamps (1), and an engagement pin (202) is provided inside the electrically controlled transverse rib sleeve (2) inside the other metal ring clamp (1). The electrically controlled horizontal rib sleeve (2) is internally equipped with an electrically controlled support rail (203). The electrically controlled support rail (203) is slidably connected to the locking pin (201) and the engaging pin (202) through a track groove (2031). One end of the locking pin (201) is equipped with an infrared sensing collar (204), which is electrically connected to the electrically controlled support rail (203). The inner side of the infrared sensing collar (204) is equipped with a locking groove (2011), and one end of the engaging pin (202) is connected to the locking pin (201) through the locking groove (2011). The locking groove (2011) structure inside the infrared sensing collar (204) can realize the connection operation between the locking pin (201) and the engaging pin (202). After the locking pin (201) and the engaging pin (202) are connected, the area between the metal ring (1) will be divided into four identical working spaces. During welding, any set of working spaces can be selected as the starting area. During the welding process, the welding torch will generate heat. At this time, the infrared sensing collar (204) on the two electrically controlled transverse rib sleeves (2) in the working area where the welding torch is located can sense the heat generated by the welding torch. The heat generated by the infrared sensing collar (204) will be further transmitted to the electric control rail (203), thereby controlling the locking pin (201) and the biting pin (202) structure inside the adjacent electric control horizontal rib sleeve (2) in this area to retract. In this way, the welding torch can directly perform welding operations along the weld seam, while the other two sets of electric control horizontal rib sleeves (2) remain locked. When the welding torch moves to the next working area, the electric control horizontal rib sleeve (2) in the current area retracts, while the electric control horizontal rib sleeve (2) in the welded area re-unfolds and is fixed.

2. The automatic welding and mating device for diffuser tubes according to claim 1, characterized in that: A photovoltaic panel assembly (103) is provided on one side of the first cavity semi-ring (101) and the second cavity semi-ring (102). The outer surface of the photovoltaic panel assembly (103) is provided with tempered glass. A lithium battery is provided inside the first cavity semi-ring (101) and the second cavity semi-ring (102). The lithium battery is electrically connected to the photovoltaic panel assembly (103) and the electric control rail (203) respectively.

3. The automatic welding and mating device for diffuser tubes according to claim 2, characterized in that: The first cavity semi-ring (101) is provided with a single-ear hinge plate (1011) at both ends, and the second cavity semi-ring (102) is provided with a double-ear hinge plate (1021) at both ends. The single-ear hinge plate (1011) is located between the double-ear hinge plates (1021). The outer surfaces of the single-ear hinge plate (1011) and the double-ear hinge plate (1021) are provided with ear-penetrating grooves (1041).

4. The automatic welding and mating device for diffusers according to claim 3, characterized in that: The single-ear hinge plate (1011) and the double-ear hinge plate (1021) are locked together by a locking bolt (104), which extends through the ear hole groove (1041) to both sides of the double-ear hinge plate (1021).

5. The automatic welding and mating device for diffuser tubes according to claim 1, characterized in that: The matching adjustment component (3) includes a storage seat (301), a pressing end (302) and an adjusting screw (303), and the storage seat (301) and the metal ring (1) are set as an integral structure.

6. The automatic welding and mating device for involute tubes according to claim 5, characterized in that: One end of the adjusting screw (303) is rotatably connected to the receiving seat (301) through the threaded sleeve groove (3011), and the pressing end (302) is installed on the other end of the adjusting screw (303).

7. The automatic welding and mating device for diffusers according to claim 6, characterized in that: A spherical shaft (3032) is provided between the pressing end (302) and the adjusting screw (303). The spherical shaft (3032) and the pressing end (302) are configured as an integral structure. The spherical shaft (3032) is rotatably connected to the adjusting screw (303) through a joint limiting groove (3031).

8. The automatic welding and mating device for diffuser tubes according to claim 7, characterized in that: The outer surface of the pressing end (302) is provided with a pressure sensing pad (304), and a gap is provided between the pressure sensing pad (304) and the pressing end (302). A sensing spring (3041) is provided on the inner side of the pressure sensing pad (304).

9. The automatic welding and mating device for diffuser tubes according to claim 8, characterized in that: The sensing spring (3041) is installed inside the pressing end (302) through the sensing bracket (3021), and the pressure sensing pad (304) is telescopically connected to the sensing bracket (3021) through the sensing spring (3041).

10. The automatic welding and mating device for diffuser tubes according to claim 9, characterized in that: Metal torsion plates (305) are welded to both sides of one end of the adjusting screw (303), and the metal torsion plates (305) are located above the pressing end (302).

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